초록 ▼

A bag with caster wheels includes a base frame 1 having caster wheels 6 and a main bag 3. The base frame 1 includes a stand 2 mounting the main bag 3 thereon and telescopic rods 5 joined on one side of this stand 2 or between both sides. The stand 2 includes supporting cylinders 7 into which the te

A bag with caster wheels includes a base frame 1 having caster wheels 6 and a main bag 3. The base frame 1 includes a stand 2 mounting the main bag 3 thereon and telescopic rods 5 joined on one side of this stand 2 or between both sides. The stand 2 includes supporting cylinders 7 into which the telescopic rods 5 are inserted to be joined. The supporting cylinders 7 are arranged between the caster wheels 6 provided at four corners of the stand 2, and are projected in a lower surface of the stand 2, so that a projection height (d) thereof is made lower than a height (h) of the caster wheels 6. In lower surface projected parts 7A of the supporting cylinders 7, reinforcement walls 8 joined to the lower surface of the stand 2 are provided. The reinforcement walls 8 are arranged between the caster wheels 6 and in a posture oriented in a lateral direction of the stand 2. In this bag, the supporting cylinders 7 are joined to the stand 2 while being reinforced by the reinforcement walls 8, and lower ends of the telescopic rods 5 are joined to these supporting cylinders 7.

대표청구항 ▼

What is claimed is: 1. A bag with caster wheels comprising: a base frame having caster wheels which are free to swivel in any direction, at four corner regions of a bottom surface thereof; and a main bag mounted on this base frame, the base frame comprising: a stand provided with the caster wheels

What is claimed is: 1. A bag with caster wheels comprising: a base frame having caster wheels which are free to swivel in any direction, at four corner regions of a bottom surface thereof; and a main bag mounted on this base frame, the base frame comprising: a stand provided with the caster wheels at the four corner regions thereof and mounting the main bag thereon; telescopic rods which are joined on one side of this stand or between both sides in an upward-extending position so as to stand on their own and which can be freely extended upward and are provided with a grip at upper ends thereof; and stoppers for stopping the telescopic rods at an extension position, wherein the main bag is joined to the telescopic rods on a side surface thereof, and the stand has supporting cylinders into which the telescopic rods are inserted to be joined, these supporting cylinders being arranged between the caster wheels provided at the four corners of the stand and being projected in a lower surface of the stand so that a projection height is made lower than a height of the caster wheels, and further, reinforcement walls joined to the lower surface of the stand are joined to lower surface projection parts of the supporting cylinders so as to reinforce the supporting cylinders for joining the stand, and lower ends of the telescopic rods are joined to these supporting cylinders. 2. The bag with caster wheels according to claim 1, wherein the reinforcement walls are provided between the caster wheels and in a position oriented in a lateral direction of the stand, that is, in a direction perpendicular to a longitudinal direction. 3. The bag with caster wheels according to claim 1, wherein the reinforcement walls comprises a longitudinal reinforcement wall oriented in a longitudinal direction in addition to the lateral reinforcements oriented in the lateral direction of the stand, and the supporting cylinders are joined to the stand with the lateral reinforcement walls and the longitudinal reinforcement wall. 4. The bag with caster wheels according to claim 1, wherein in the base frame, each of the supporting cylinders is provided with two parallel rows of reinforcements. 5. The bag with caster wheels according to claim 4, wherein in the base frame, two rows of reinforcements are provided so as to be joined to both sides of the supporting cylinders. 6. The bag with caster wheels according to claim 4, wherein in the base frame, both of the lateral reinforcement walls and the longitudinal reinforcement wall are made of two parallel rows of ribs, respectively. 7. The bag with caster wheels according to claim 1, wherein in the stand, an upper surface thereof, is flat and in the lower surface, reinforcement ribs extending in the longitudinal and lateral directions are provided by integrally being formed from plastic. 8. The bag with caster wheels according to claim 1, wherein the telescopic rods are curved in a direction in which the grip is moved from one side toward the center of the stand when pulled up. 9. The bag with caster wheels according to claim 1, wherein telescopic rods are inclined in a direction in which a grip is moved from one side toward the center of a stand when pulled up. 10. The bag with caster wheels according to claim 1, wherein a height from bottom surfaces of the caster wheels to the grip is 60 to 100 cm with the telescopic rods extended and stopped by the stoppers. 11. The bag with caster wheels according to claim 1, wherein the main bag is detachably mounted on the base frame. 12. The bag with caster wheels according to claim 1, wherein the telescopic rods comprise guide cylinders fixed to the stand in a position in which the telescopic rods are oriented vertically, and extension rods inserted into these guide cylinders in an extractable manner, and the grip is fixed to upper ends of the extension rods. 13. The bag with caster wheels according to claim 1, wherein the base frame is provided with the two supporting cylinders on one side of the stand, the two telescopic rods are joined to the two supporting cylinders, and the grip is joined to upper ends of the two telescopic rods. 14. The bag with caster wheels according to claim 13, wherein the longitudinal reinforcement is provided between the two supporting cylinders, and the two supporting cylinders are joined to the stand with the longitudinal reinforcement. 15. The bag with caster wheels according to claim 13, wherein in the two telescopic rods, upper ends of the guide cylinders are joined to a joining rod. 16. The bag with caster wheels according to claim 15, wherein the joining rod has joining pieces projected upward on a surface opposed to the main bags and the main bag is provided with insertion parts into which the joining pieces are inserted to be joined to the joining rod, wherein the joining pieces are put into the insertion parts to join the main bag to the joining rod. 17. The bag with caster wheels according to claim 1, wherein the telescopic rods have the joining pieces projected upward on surfaces opposed to the main bag, and the main bag is provided with the insertion parts into which the joining pieces are inserted to be joined to the telescopic rods, wherein the joining pieces are put into the insertion parts to join the main bag to the telescopic rods. 18. The bag with caster wheels according to claim 1, wherein the base frame has the stand and the reinforcement walls integrally formed from plastic.